Lock and latch combined



(No Model.)

J. A. E. ANDERSUN.

LOGK AND LATCH COMBINED.

No. 331,671. Patented Dec. 1, 1885.

k Fag. 1.

UNITED STATES Parana" @rrrcn.

JOHN A. E. ANDERSON, OF LEBANON, ASSIGNOR TO HIMSELF AND JACOB GUSHWA, LAFAYETTE, INDIANA.

LOCK AND LATCH COMBENED.

SPECIFICATION forming part of Letters Patent No. 331,671, dated December 1, 1885.

Application tiled March 13, 1884. Serial No. 124,122.

To aZZ whom it may concern.-

Be it known that I, J OHN A. E. Axnnnsox, a citizen of the United States, residing at Lebanon, in the county of Boone and State of Indiana, have invented a new and useful Lock and Latch Combined, of which the following is a specification.

My invention relates to improvements in weight-lever latch-locks, the objects being to cheapen and simplify the latch operating and locking mechanism. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a side view of the lock with one plate removed to show the form, construction, and arrangement of the several parts; and Fig. 2 is a transverse vertical section on line mm, Fig. 1.

Similar letters refer to the same parts throughout the several figures.

A is the case containing the working parts of the lock.

B is the Weighted latch-leveighaving its fulcrum at b, the greatest practicable distance from its center ofgravity.

H, the latch or bolt, is attached at h so as to be reversible, thereby adapting it to either side of a door.

0 is the knoblever, having its bearings in the side plates of the case. The k nob-shaft I passes through the lever O, and the lever is formed and arranged,as shown, so as to engage with both the arm B of Weight-lever B and one arm of the intermediate lever, D, having its fulcrum at d. It is obvious that from this arrangement a right or left turn of k nob-shaft I will raise weight-lever B, and thus operate the latch H.

E is a segmental locking-tumbler, having a downward V-shaped projection, e. 'Ihis tumbler rests loosely on an annular slotted guide, F, the V-shaped projection passing through the slot so that the key may engage with it, and whereby it is reciprocated about the guide F.

(No model.)

To provide for release of the key when the tumbler has been rotated to either the locked or unlocked position, the under side of Weight lever B is formed so that spaceis provided for the tumbler to be raised from its seat by pressure of the key against theinclined sides of V- shapcd projection 0, thus allowing the key to pass under it.

G is a segmental annular guard arranged within rest F, to prevent other instruments than the proper key being used to manipulate tumbler E. ff are rests for tumbler E. A spring, i, may be employed, if desired, to hold the Weight-lever B more firmly in posi tion.

The form given to the singie weight-lever B, with its arm B,together with the position of its fulcrum at b, is such as to secure the greatest practicable weight consistent with its required movement between the mechanism for operating ,it and the locking device, and at the same time to provide for placing the kn obshaft and key-hole in the same vertical plane at the greatest practicable distance apart and at the greatest practicable distance from the door-jamb, so that convenient access may be had to them.

The upperside oi'segmental locking-tumbler E is formed with recesses near its ends to receive the downward projection e of Weight-lever B, which holds it from being easily moved out of position, except as manipulated by the key.

IVhat I claim is In a weight-lever lock-latclnthe combination of a single weightlever, B, formed, as shown, with arm B, and projection c, knob-lever 0, intermediate lever, D, and segmental lockingtnmbler E, having recesses in. its periphery, substantially as set forth.

JOHN A. E. ANDERSON.

Vitnesses:

PETER COX,

W. O. DARNALL. 

